It is a Colorless card illustrated by Satoshi Shirai
Did you try to buy them the day of the unbanning announcement
CAD$ 79.99 Wishlist Details Set: Celebrations Card Number: 025/025 Rarity: Secret Rare Illustrator: Saki Hayashiro Retreat Cost: 1 Weakness: Darkness HP: 60 Stage: Basic Card Type: Psychic Resistance: Fighting Name: Mew (Secret) Finish: Holo Attack #1: [PC] Psyshot (30) Card Text: Ability - Mysterious Tail Once during your turn, if this Pokmon is in the Active Spot, you may look at the top 6 cards of your deck, reveal an Item card you find there, and put it into your hand
Her deckbuilding appeal is thanks to the flexibility of Merryweather, Good Fairy
Remember, these cards care about how much mana you actually spent on the spell, not the printed mana value so the higher tiers of Ice Magic and Thunder Magic, the flashback casts of Dreams of Laguna and Laughing Mad, and a big Syncopate or Choco-Comet will all work to trigger your stuff
When this card in your possession is sent to your Graveyard by an opponent's card effect: Banish this card